mod/scorm/datamodels/sequencinghandler.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 require_once('../../../config.php');
  18 require_once($CFG->dirroot.'/mod/scorm/locallib.php');
  19
  20 $id = optional_param('id', '', PARAM_INT);  // Course Module ID, or
  21 $a = optional_param('a', '', PARAM_INT);  // scorm ID.
  22 $scoid = required_param('scoid', PARAM_INT);  // Sco ID.
  23 $attempt = required_param('attempt', PARAM_INT);  // Attempt number.
  24 $function  = required_param('function', PARAM_RAW);  // Function to call.
  25 $request = optional_param('request', '', PARAM_RAW);  // Scorm ID.
  26
  27 if (!empty($id)) {
  28     $cm = get_coursemodule_from_id('scorm', $id, 0, false, MUST_EXIST);
  29     $course = $DB->get_record("course", array("id" => $cm->course), '*', MUST_EXIST);
  30     $scorm = $DB->get_record("scorm", array("id" => $cm->instance), '*', MUST_EXIST);
  31 } else if (!empty($a)) {
  32     $scorm = $DB->get_record("scorm", array("id" => $a), '*', MUST_EXIST);
  33     $course = $DB->get_record("course", array("id" => $scorm->course), '*', MUST_EXIST);
  34     $cm = get_coursemodule_from_instance("scorm", $scorm->id, $course->id, false, MUST_EXIST);
  35 } else {
  36     print_error('missingparameter');
  37 }
  38
  39 $PAGE->set_url('/mod/scorm/datamodels/sequencinghandler.php',
  40     array('scoid'=>$scoid, 'attempt'=>$attempt, 'id'=>$cm->id, 'function' => $function, 'request' => $request));
  41
  42 require_login($course, false, $cm);
  43
  44 if (!empty($scoid) && !empty($function)) {
  45     require_once($CFG->dirroot.'/mod/scorm/datamodels/scorm_13lib.php');
  46
  47     if (has_capability('mod/scorm:savetrack', context_module::instance($cm->id))) {
  48         $result = null;
  49         switch ($function) {
  50             case 'scorm_seq_flow' :
  51                 if ($request == 'forward' || $request == 'backward') {
  52                     $seq = scorm_seq_navigation ($scoid, $USER->id, $request.'_', $attempt);
  53                     $sco = scorm_get_sco($scoid);
  54                     $seq = scorm_seq_flow($sco, $request, $seq, true, $USER->id);
  55                     if (!empty($seq->nextactivity)) {
  56                         scorm_seq_end_attempt($sco, $USER->id, $seq);
  57                     }
  58                 }
  59                 echo json_encode($seq);
  60                 break;
  61         }
  62     }
  63 }